Chapter 42 Introduction to selected homologous series

Which of the following compounds are soluble in water?

(1) 1-bromopentane

(2) Methanol

(3) Propanone

• (1) and (2) only

• (1) and (3) only

• (2) and (3) only

• (1), (2) and (3)

Which of the following statements concerning pentane and 2,2-dimethylpropane are correct?

(1) They have the same molecular mass.

(2) Pentane has a higher boiling point than 2,2-dimethylpropane.

(3) Pentane and 2,2-dimethylpropane are denser than water.

• (1) and (2) only

• (1) and (3) only

• (2) and (3) only

• (1), (2) and (3)

Which of the following is the correct increasing order of boiling points of the compounds?

• Methyl ethanoate < propanoic acid < propane

• Methyl ethanoate < propane < propanoic acid

• Propane < methyl ethanoate < propanoic acid

• Propanoic acid < methyl ethanoate < propane

What is the systematic name of the following compound?

• Butanone

• Hexanoic acid

• Ethyl ethanoate

• Ethyl 2-methylpropanoate

Which of the following statements concerning 2-chloropropane and 2-iodobutane are correct?

(1) They are haloalkanes.

(2) 2-chloropropane has a higher boiling point than 2-iodobutane.

(3) They have the same general formula, RX, where R is an alkyl group and X is a halogen atom.

• (1) and (2) only

• (1) and (3) only

• (2) and (3) only

• (1), (2) and (3)

How many types of functional groups are in the following compound?

• 2

• 3

• 4

• 5

Which of the following combinations is correct?

Homologous series, General formula

• Aldehydes, RCH₂OH

• Unsubstituted amides, RNH₂

• Alcohols, RCHO

• Carboxylic acids, RCOOH

Which of the following is the correct decreasing order of boiling points of the compounds?

• Propanamide > propan-1-amine > propanoic acid

• Propanoic acid > propanamide > propan-1-amine

• Propan-1-amine > propanoic acid > propanamide

• Propanamide > propanoic acid > propan-1-amine

Which of the following compounds has/have hydrogen bonds between their molecules?

(1) Ethanamine

(2) Ethyl ethanoate

(3) Ethanal

• (1) only

• (2) only

• (1) and (3) only

• (2) and (3) only

Which of the following statements concerning butanamide and methyl propanoate are correct?

(1) They are soluble in water.

(2) They are more volatile than 1-bromobutane.

(3) Butanamide has a higher boiling point than methyl propanoate.

• (1) and (2) only

• (1) and (3) only

• (2) and (3) only

• (1), (2) and (3)